CVE-2017-18640
SnakeYAML Entity Expansion during load operation
7.5
HIGH
CVSS 3.1
EPSS 2.8%
Description
The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564.
How to fix CVE-2017-18640
To remediate CVE-2017-18640, upgrade the affected package to a fixed version below.
- Debian/snakeyaml—upgrade to 1.25+ds-3 or later
- Maven/org.yaml:snakeyaml—upgrade to 1.26 or later
Is CVE-2017-18640 being exploited?
Low — EPSS is 2.8%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.25+ds-3
- from 0, < 1.26
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |